Furniture Hinge Enclosure Shell with Sliding Biasing Mechanism

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Solution Overview

Problem

Existing solutions fail to aesthetically conceal and replace the unattractive appearance of furniture hinges with a shell that can be shaped as desired, while also accommodating various hinge sizes and kinematic mechanisms.

Innovation Solution

A shell composed of two elements, a movable female element and a fixed male element, where the female element is biased by a spring and snap-hooked to a shell-supporting block, allowing complete enclosure of the hinge, enabling diverse shapes and thicknesses without supporting the hinge's movement, thus providing a unified assembly system for different hinge configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a protective guard is used to partially cover the hinge, then safety is improved by preventing accidents, but aesthetic appearance deteriorates because the hinge remains partially visible and the solution is limited in design flexibility

Engineering Contradiction:
ImprovesafetyVSAvoidaesthetic appearance
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The shell is divided into multiple independent elements (first element, second element, third element) that can be separately manufactured and assembled. Each element serves a specific function: the first element covers part of the hinge, the second element provides additional coverage, and the third element completes the enclosure. This segmentation allows for optimized aesthetic design of each component while maintaining safety functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell elements are designed to nest together, with the second element overlapping the first element and the third element overlapping the second element. This nesting arrangement creates a complete enclosure of the hinge while allowing each element to be independently designed and manufactured. The overlapping structure ensures that no part of the hinge is visible, achieving complete aesthetic concealment.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of manufacture

If a simple guard is used to enable painting, then paint application is improved by preventing damage to the hinge, but aesthetic appearance deteriorates because the guard does not provide complete enclosure and design options are limited

Engineering Contradiction:
Improvepaint applicationVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The nested arrangement of shell elements (first element, second element, third element) creates complete enclosure of the hinge, ensuring that paint cannot penetrate to the hinge surface. The overlapping structure provides multiple layers of protection, guaranteeing that the hinge remains protected during painting while achieving complete aesthetic concealment when painted.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The shell elements are designed with movable connections, allowing the shell to dynamically adapt to the hinge's movement. The elements can move relative to each other while maintaining their enclosing function, ensuring continuous protection during painting and operation while providing design flexibility for various aesthetic requirements.

Inventive Principle:
Principle #15Dynamics

3Strength

If the shell supports the hinge's movement, then structural integrity is improved, but device complexity deteriorates because the shell becomes mechanically coupled to the hinge mechanism

Engineering Contradiction:
Improvestructural integrityVSAvoidmechanical coupling
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The shell is segmented into multiple independent elements connected by simple joints, rather than forming a rigid unified structure. This segmentation allows each element to move independently with the hinge while maintaining overall structural integrity. The simple connections between elements avoid complex mechanical coupling while ensuring the shell remains structurally sound.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell elements are designed to move dynamically with the hinge through simple articulated connections rather than rigid coupling. Each element can adjust its position independently, allowing the shell to accommodate hinge movement while maintaining structural integrity. This dynamic design avoids complex mechanical linkages while ensuring the shell remains strength sufficient.

Inventive Principle:
Principle #15Dynamics

4Reliability

If guides are used to ensure constant overlap, then enclosure reliability is improved by preventing accidental opening, but device complexity deteriorates due to additional components and friction

Engineering Contradiction:
Improveenclosure reliabilityVSAvoidadditional components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The shell elements feature asymmetric overlapping arrangements where the overlap geometry itself provides the locking function. The asymmetric shape of the overlapping surfaces creates natural engagement that prevents accidental opening without requiring additional symmetric guide components. This asymmetric design achieves enclosure reliability through the basic shell geometry rather than added complexity.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The overlapping shell elements are designed to self-align and self-lock through their geometric configuration. The constant overlap is maintained automatically by the asymmetric shapes of the elements, which naturally guide each other into the correct position without requiring external guides. This self-service mechanism prevents accidental opening while avoiding additional components and associated friction.

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively conceals the hinge, allowing for a variety of aesthetically pleasing shell shapes and sizes, reducing friction and noise, and enabling use with various hinge sizes and mechanisms, while maintaining practical and safe operation.

Implementation Method 1

the female element is biased by a spring element so as to rest on the male element

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentEP2912249B1Shell having at least two elements, which totally encloses a hinge for furniture
Publication Date: 2018.07.04 MANZONI GIULIO
  • EP2912249B1 patent drawingFigure 1~5
  • EP2912249B1 patent drawingFigure 2~7
  • EP2912249B1 patent drawingFigure 8~11

AI summary

The shell having at least two elements, totally encloses a hinge for fiimiture and has a female element (1) applicable to one of the movable (5) or fixed (9) parts of the hinge for furniture and a fixed male element (7) applicable on the other of the fixed (9) or movable (5) parts of the hinge for furniture, the female element (1) is hingedly connectable to a joint (3) integral with the movable (5 ) or fixed (9) part of the hinge for furniture or directly with the part of the piece of furniture on which the respective movable (5) or fixed (9) part of the hinge is fixed, biasing or guiding means being provided by means of which the female element (1), during the movement of the hinge, is biased or guided in such a way to slide over the male element (7) secured to the other fixed (9) or movable (5) part of the hinge for furniture.